﻿using PlatformNetCore.Common;
using PlatformNetCore.Common.Utility;
using PlatformNetCore.Entity;
using PlatformNetCore.Entity.Models;
using PlatformNetCore.IRepository;
using PlatformNetCore.IService;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;

namespace PlatformNetCore.Service
{
    public class NewsService : INewsService
    {
        private readonly INewsRepository newsRepository;
        public NewsService(INewsRepository _newsRepository)
        {
            newsRepository = _newsRepository;
        }

        #region 后台-News
        /// <summary>
        /// 获取分页数据
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public LayPager<News> GetNewsPagedList(int pageIndex, int pageSize, Expression<Func<News, bool>> predicate)
        {
            var list = newsRepository.GetPagedList(pageIndex, pageSize, predicate);
            LayPager<News> pmodel = new LayPager<News>();
            if (list != null)
            {
                pmodel.count = list.TotalItemCount;
                pmodel.msg = CommonConst.Success;
                pmodel.data = list.ToList();
            }
            return pmodel;
        }
        /// <summary>
        /// 获取
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public ResultResponse<News> GetNews(string id)
        {
            ResultResponse<News> resultResponse = new ResultResponse<News>() { success = false, msg = CommonConst.Fail };
            resultResponse.data = newsRepository.GetById(id);
            if (resultResponse.data != null)
            {
                resultResponse.success = true;
                resultResponse.msg = CommonConst.Success;
            }
            return resultResponse;
        }

        /// <summary>
        /// 新增
        /// </summary>
        /// <param name="entity"></param>
        public ResultResponse AddNews(News model, IPathProvider pathProvider)
        {
            ResultResponse response = new ResultResponse() { success = false, msg = CommonConst.Fail };
            if (string.IsNullOrWhiteSpace(model.Title))
            {
                response.msg = "标题不能为空!";
                return response;
            }
            model.ID = IdentityCreator.NextIdentity;
            model.AddDate = DateTime.Now;
            response.success = newsRepository.Add(model);
            response.msg = response.success ? CommonConst.Success : CommonConst.Fail;
            return response;
        }

        /// <summary>
        /// 编辑
        /// </summary>
        /// <param name="entity"></param>
        public ResultResponse UpdateNews(News model)
        {
            ResultResponse response = new ResultResponse() { success = false, msg = CommonConst.Fail };
            if (string.IsNullOrWhiteSpace(model.Title))
            {
                response.msg = "标题不能为空!";
                return response;
            }
            var o = newsRepository.GetById(model.ID);
            o.Title = model.Title;
            o.Content = model.Content;
            o.CoverImage = model.CoverImage;
            o.IsAvailable = model.IsAvailable;
            o.IsRecommend = model.IsRecommend;
            o.NewsType = model.NewsType;
            o.Source = model.Source;
            o.PublishDate = model.PublishDate;
            o.Remark = model.Remark;
            o.SEOTitle = model.SEOTitle;
            o.SEOKeyword = model.SEOKeyword;
            o.SEODescription = model.SEODescription;
            o.SortNo = model.SortNo;
            o.UpdateBy = model.UpdateBy;
            o.UpdateDate = DateTime.Now;

            response.success = newsRepository.Update(o);
            response.msg = response.success ? CommonConst.Success : CommonConst.Fail;
            return response;
        }

        /// <summary>
        /// 复制
        /// </summary>
        /// <param name="id"></param>
        /// <param name="userName"></param>
        /// <returns></returns>
        public ResultResponse CopyNews(string id, string userName)
        {
            ResultResponse response = new ResultResponse() { success = false, msg = CommonConst.Fail };
            News news = newsRepository.GetById(id);
            if (news != null)
            {
                News model = new News()
                {
                    ID = IdentityCreator.NextIdentity,
                    Title = news.Title + CommonConst.Copy,
                    AddBy = userName,
                    AddDate = DateTime.Now,
                    Content = news.Content,
                    CoverImage = news.CoverImage,
                    IsAvailable = news.IsAvailable,
                    IsDel = news.IsDel,
                    IsRecommend = news.IsRecommend,
                    NewsType = news.NewsType,
                    PublishDate = news.PublishDate,
                    Remark = news.Remark,
                    SEODescription = news.SEODescription,
                    SEOKeyword = news.SEOKeyword,
                    SEOTitle = news.SEOTitle,
                    SortNo = news.SortNo,
                    Source = news.Source
                };
                response.success = newsRepository.Add(model);
                response.msg = response.success ? CommonConst.Success : CommonConst.Fail;
            }
            return response;
        }

        /// <summary>
        /// 推荐，取消推荐 操作
        /// </summary>
        /// <param name="ids"></param>
        /// <param name="dataStatus"></param>
        /// <returns></returns>
        public ResultResponse UpdateNewsState(List<string> ids, string userName, DataStatus dataStatus)
        {
            ResultResponse response = new ResultResponse() { success = false, msg = CommonConst.Fail };
            var products = newsRepository.GetList(s => ids.Contains(s.ID)).ToList();
            if (products != null && products.Count > 0)
            {
                switch (dataStatus)
                {
                    case DataStatus.Recommend:
                    case DataStatus.UnRecommend:
                        products.ForEach(k =>
                        {
                            k.IsRecommend = DataStatus.Recommend == dataStatus ? 1 : 0;
                            k.UpdateBy = userName;
                            k.UpdateDate = DateTime.Now;
                        });
                        response.success = newsRepository.Update(products);
                        break;
                    case DataStatus.Deleted:
                        products.ForEach(k =>
                        {
                            k.IsDel = 1;
                            k.UpdateBy = userName;
                            k.UpdateDate = DateTime.Now;
                        });
                        response.success = newsRepository.Update(products);
                        break;
                }
                response.msg = response.success ? CommonConst.Success : CommonConst.Fail;
            }
            return response;
        }
        #endregion

    }
}
